This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X250-100, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-100
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X250-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 250mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X250-100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X250-100
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-100
The AirTAC SIJ100X250-100 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 100 mm on-site, giving a usable 150-250 mm window from the 250 mm nominal maximum. It features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, and a fixed G1/2 port.
The direct replacement is the SAIJ100X250-100, retaining the same interface, force, and adjustability. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this SKU lacks a -S magnet for sensing, and the stop screw sets end position only—it is not a load lock.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-100 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X250-100 |
| Bore size | Ø100 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ100X250-100 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X250-100 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-100 Is Used
Variable Depth Forming
Pressing operations requiring field-tuned material engagement, using the external screw to precisely trim the extend stroke within the 150-250 mm window.
Adjustable Transfer Diverter
Routing packages of varying sizes where the actuator's end position must be shortened on-site without changing the entire cylinder body.
Modular Pallet Stopper
Acting as a height-specific physical stop for pallets, allowing technicians to dial in the exact extend length up to 100 mm shorter than nominal.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-100 with the SAIJ100X250-100
To replace the discontinued SIJ100X250-100, specify SAIJ100X250-100 for an exact ISO 15552 direct fit. Choose the 100 mm adjust window if your fixture needs on-site extend trimming between 150 and 250 mm; the stop screw sets the end position but is not a lock. Reuse existing FA, LB, or TC mounts. As this unit has no -S suffix, it cannot accept a magnetic switch. For strokes at or over 300 mm, verify side-load guidance to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X250-100
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-100 FAQ
Yes, the SIJ100X250-100 is discontinued. The direct replacement is the SAIJ100X250-100. It shares the identical ISO 15552 mounting interface, 250 mm stroke, 100 mm adjust window, 100 mm bore force, and G1/2 port. The SAIJ family also upgrades the piston seal to a two Y-shaped one-way element design for lower start-up pressure and longer life.
The external stop screw allows you to trim the extend stroke by up to 100 mm on-site, yielding a usable extend window of 150-250 mm. The stop sets the end position only; it is not a load lock. For held loads, use an external rod lock or the SAIL/BSAI variants.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X250-100
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X250-100 replacement — usually within 7-8 hours.